<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			*{
				margin: 0;
			}
			.container{
				width: 1000px;
				height: 600px;
				background-color: azure;
			}
			img{
				width: 100%;
				height: 100%;
			}
		</style>
	</head>
	<body>
		<div class="container">
			<img src="css/暗物质星云.jpg" >
		</div>
	</body>
</html>
